Answer:
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
My full powers come when my makers are dead. I await a heavy hat to put on my head. What am I?
I am alive without breath and cold as death. I am never thirsty but always drinking. What am I?
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
I am heavy forward but backward I'm not.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.